This quiz will test your knowledge of key concepts in data visualization and data science. You will be asked questions about visualization best practices, different chart types, and commonly used Python libraries like Matplotlib, Seaborn and Plotly.

The number of attempts remaining is 5

1 / 30

How do you set the width of bars in a seaborn barplot?

A) width_bar=0.8

B) bar_width=0.8

C) width=0.8

D) set_width(0.8)

2 / 30

What type of chart is best for visualizing categorical variables?

A) Scatter plot

B) Line chart

C) Bar chart

D) Pie chart

3 / 30

What seaborn function is used to draw a point plot?

A) sns.draw_points()

B) sns.plot_points()

C) sns.pointplot()

D) sns.points()

4 / 30

What is overplotting in data visualization?

A) When there are too many colors in a plot

B) When the x and y axes are not labeled

C) When data points are plotted on top of each other

D) When the legend is missing

5 / 30

Which function in matplotlib is used to create a new figure?

A) plt.create()

B) plt.new()

C) plt.graph()

D) plt.figure()

6 / 30

What library is used in Python for interactive web-based data visualization?

A) Bokeh

B) Seaborn

C) Plotly

D) Matplotlib

7 / 30

Which seaborn function is used to draw a line plot?

A) sns.lines()

B) sns.lineplot()

C) sns.draw_line()

D) sns.plot_line()

8 / 30

What type of chart is best for showing data trends over time?

A) Pie chart

B) Line chart

C) Bar chart

D) Scatter plot

9 / 30

Which layout attribute sets grid line properties?

A) xaxis_grid

B) gridlines

C) set_grid

D) layout.grid

10 / 30

Which library in Python is primarily used for plotting data?

A) scipy

B) numpy

C) pandas

D) matplotlib

11 / 30

Which Plotly method updates axes properties (like ranges) non-uniformly?

A) update_axlims()

B) fig.update_axes()

C) fig.update_xaxes()

D) axes_update()

12 / 30

How do you add a legend to a Plotly figure?

A) add_legend()

B) legend=True

C) layout.legend.showlegend=True

D) show_legend()

13 / 30

Which attribute sets the font properties in Plotly layout?

A) font_family

B) font_props

C) layout.font

D) set_font

14 / 30

Which parameter controls the size of markers in a matplotlib scatter plot?

A) s

B) marker_size

C) plot_size

D) size

15 / 30

Which attribute sets the plot title in Plotly?

A) plot_title

B) name

C) title

D) set_title

16 / 30

Which function is used to add subplots in Matplotlib?

A) plt.add_subplot()

B) plt.subplots()

C) plt.create_subplot()

D) plt.subplot()

17 / 30

What type of chart is best for showing proportions within a whole?

A) Bar chart

B) Line chart

C) Pie chart

D) Scatter plot

18 / 30

What type of object is returned when a Plotly figure is created?

A) GraphObject

B) Figure

C) Plot

D) Layout

19 / 30

Which Plotly method updates and renders a figure on the screen?

A) render()

B) fig.update_layout()

C) update()

D) fig.show()

20 / 30

Which color palette is used by default in seaborn plots?

A) 'muted'

B) default

C) plt.colors()

D) predefined

21 / 30

What principle states that graphs should maximizeink ratio (data-to-ink ratio)?

A) Chartjunk principle

B) Visual hierarchy principle

C) Tufte's data-ink maximization principle

D) Lie Factor principle

22 / 30

Did you subscribe to our YouTube channel Codancis ?

A) No

B) Already subscribed

C) Don't use YouTube

D) Yes

23 / 30

How do you change the number of bins in a Matplotlib histogram?

A) set_bins(10)

B) bins=10

C) n_bins=10

D) plt.hist(bins=10)

24 / 30

Which function in pandas is used to plot data directly from a DataFrame?

A) df.graph()

B) df.visualize()

C) df.plot()

D) df.draw()

25 / 30

Which parameter controls the legend location in matplotlib?

A) loc

B) location

C) legend_loc

D) legendposition

26 / 30

How do you save a figure without displaying it in Matplotlib?

A) plt.savefig('figure.png')

B) plt.export('figure.png')

C) plt.save('figure.png')

D) plt.to_file('figure.png')

27 / 30

What is the purpose of a heatmap in data visualization?

A) To visualize data density or intensity across a 2D space

B) To plot time series data

C) To draw 3D plots

D) To create interactive plots

28 / 30

How do you set the color of bars in a seaborn barplot?

A) color_bar='blue'

B) bar_color='blue'

C) set_color('blue')

D) color='blue'

29 / 30

Which Excel function creates a pivot table?

A) =PIVOT()

B) =SUMMARY()

C) =TRANSPOSE()

D) =ANALYZE()

30 / 30

Which function is used to create a histogram in Matplotlib?

A) plt.plot_hist()

B) plt.histogram()

C) plt.draw_hist()

D) plt.hist()

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